Search a number
-
+
30120202213 = 61031493523
BaseRepresentation
bin11100000011010011…
…011100111111100101
32212202010110210210221
4130003103130333211
5443141232432323
621500444244341
72114256331423
oct340323347745
985663423727
1030120202213
1111857083802
125a072406b1
132ac026007a
14165a3b8113
15bb446e55d
hex7034dcfe5

30120202213 has 4 divisors (see below), whose sum is σ = 30120756768. Its totient is φ = 30119647660.

The previous prime is 30120202199. The next prime is 30120202223. The reversal of 30120202213 is 31220202103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30120202213 - 217 = 30120071141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120202223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185731 + ... + 307792.

It is an arithmetic number, because the mean of its divisors is an integer number (7530189192).

Almost surely, 230120202213 is an apocalyptic number.

It is an amenable number.

30120202213 is a deficient number, since it is larger than the sum of its proper divisors (554555).

30120202213 is an equidigital number, since it uses as much as digits as its factorization.

30120202213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554554.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30120202213 its reverse (31220202103), we get a palindrome (61340404316).

The spelling of 30120202213 in words is "thirty billion, one hundred twenty million, two hundred two thousand, two hundred thirteen".

Divisors: 1 61031 493523 30120202213